Pengaruh Penggunaan Koagulan (Air Asam Tambang, Aluminium Sulfat) Dalam Pengolahan Air Run Off Pertambangan Batu Bara

Septiariva, Iva Yenis (2014) Pengaruh Penggunaan Koagulan (Air Asam Tambang, Aluminium Sulfat) Dalam Pengolahan Air Run Off Pertambangan Batu Bara. Undergraduate thesis, Institut Teknologi Sepuluh Nopember Surabaya.

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Abstract

ir run off mempunyai kekeruhan dan TSS yang tinggi. Selain air run off, permasalahan yang dihadapi oleh industri pertambangan adalah keluarnya air asam tambang.Air asam tambang (AAT) memiliki pH rendah dan mengandung logam berat. AAT dan air run off apabila tidak dikelola akan mencemari lingkungan. Kandungan Fe total dalam AAT berpotensi sebagai koagulan. Penelitian ini bertujuan untuk mengolah air run off pertambangan batu bara melalui proses koagulasi-flokulasi dengan metode jar test. Jar test dilakukan dengan pengadukan cepat 200 rpm selama 60 detik dan pengadukan lambat 40 rpm selama 15 menit. Variabel bebas adalah dosis koagulan, pH air sampel, pH AAT, kekeruhan awal, kecepatan pengadukan lambat dan waktu pengendapan. Variabel terikat yaitu TSS, kekeruhan dan pH akhir. Berdasarkan penelitian ini dapat disimpulkan bahwa penggunaan air asam tambang berpengaruh dalam penurunan TSS dan kekeruhan.Penggunaan air asam tambang sebagai koagulan lebih efektif daripada koagulan aluminium sulfat.Dosis dan pH optimum air asam tambang dalam pengulahan air run off adalah 1,083 mg Fe/L dan pH 7. Sedangkan dosis dan pH aluminium sulfat adalah 300 mg/L dan pH 7. Kecepatan pengadukan optimum adalah saat 20 rpm sedangkan waktu pengendapan optimum saat 30 menit =========================================================================================== Run off water in coal mining generally has high turbidity and TSS (Total Suspended Solid). Beside of run off water, another problem in mining industry is the presence of Acid Mine Drainage (AMD). Acid mine drainage (AMD) has low pH and containing heavy metals. Without a good processing, AMD and run off water can contamine the enviroment. Total content of Fe in acid mine drainage potentially become coagulant. The main purpose of this research is to treat coal mining run off water by coagulationflocculation process by jar-test method. Jar test was done by applying 200 rpm rapid mix during 60 seconds and 40 rpm slow mix during 15 minutes. The independent variables were coagulant dosage, pH of the sample water, pH of AMD, turbidity, slow mix and settling time. The dependent variables were TSS, turbidity and pH. Based on the research, it can be concluded that the use of acid mine drainage affects to the decreasing of TSS and turbidity. The use of acid mine drainage as coagulant was more effective than aluminium sulfate coagulant. The dosage and the optimum pH of acid mine water in the processing of run off drainage was 1,083 mg Fe/L and pH 7. Whereas the dosage and the pH of aluminium sulfate was 300 mg/L and pH 7. The speed of optimum stirring was 20 rpm and the optimum settling time was 30 minutes

Item Type: Thesis (Undergraduate)
Additional Information: RSL 628.162 2 Sep p
Uncontrolled Keywords: air asam tambang, air run off, koagulan
Subjects: T Technology > TD Environmental technology. Sanitary engineering > TD430 Water--Purification.
T Technology > TD Environmental technology. Sanitary engineering > TD455 Chemical precipitation. Coagulation. Flocculation. Water--Purification--Flocculation.
Divisions: Faculty of Civil Engineering and Planning > Environment Engineering > 25201-(S1) Undergraduate Thesis
Depositing User: EKO BUDI RAHARJO
Date Deposited: 24 Sep 2020 05:38
Last Modified: 24 Sep 2020 05:38
URI: https://repository.its.ac.id/id/eprint/82038

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